Avunit is one of the core seven members of LulzSec. He left the group after their self-labelled “Fuck the FBI Friday” and is the only one of the core members that has not been identified.
https://x.com/avunitanon?lang=en https://www.justice.gov/archive/usao/nys/pressreleases/March12/hackers/ackroydetalindictment.pdf